Drain trap



2 Sheets-Sheet 1 Sept. l0, 1929- L. ALMQUls'r ET AL.

DRAIN TRAP F'led April 28, 1926 Sept. l0, 1929. L.. ALMQUIST ET Ax. 1,727,688

DRAIN TRAP Filed April 2a, 1926 2 sheets-sheet 2 Patented Sept. 10, 1929.

UNITED STATES PATENT OFFICE.

LEOPOLD ALMQUIST, OF NEW YORK, N. Y., AND VICTOR WILLOGHBY, F RIDGE- WOOD, NEW JERSEY, ASSIGNORS TO AMERICAN CAR AND FOUNDRY COMPANY, OF NEW YORK, N. Y., A CORPORATION OF NEW JERSEY. y

DRAIN Application filed April 28,

Reference is had to the accompanying drawings which illustrate the preferred form of the invention; though it is to be understood that the invention is not limited to the exact details of construction shown and described, as it is obvious that various modifications thereof within the scope of the claims will occur to persons skilled in the art.

In said drawings:

Figure 1 is a sectional elevational view of a portion of a refrigerator car with a trap therein formed in accordance with our invention;

Fig. 2 is a plan view of the trap shown in Fig. 1;

Fig. 3 is an enlarged view of the hinge connection shown in Fig. l;

Fig. 4; is a plan view of a modified hinge structure 5 Fig. 5 is a sectional elevational view of a portion of a refrigerator car with a modi-V fied trap therein;

Fig. 6 is a plan view of the trap shown in Fig. 5;

Fig. 7 is a sectional view illustrating the y connection of the hinge member to the cap, and

Fig. 8 is an elevational view of a modified hinge.

Our invention relates to drain traps suitable especially for refrigerator cars, for sealing their drainage outlets against entrance of outside air. IVe aim to provide a simple, rugged and durable device, easy and economical to manufacture and install. In particular7 we aim to assure proper opening of al movable cap of such a trap in cleaning, and to obviate injury to the cap; to provide for the normal support of such cap on the outlet of the trap when lowered; and to provide against the cap being raised too far (past dead center) so as to remain open automatically instead of automatically closing.

Referring to Figs. 1, 2 and 3 ofthe drawings, and particularly to Fig. 1, a refrigerator car is illustrated having a sill 1 with an angle 2 secured thereto by rivets. A beam 3, which rests upon the angle 2, is secured to the sill l by means of bolts 4. The flooring of the car comprises a subfloor 5 of wood which con- TRAP.

1926. Serial N0. 105,187.

therein to accommodate a bowl 27. The bowl 27 is provided with a flange 28 which is secured to the ice pan by means of rivets 29. An opening in the bottom ofthe bowl 27 Vis provided for receiving an outlet pipe 30. A suitable flange 31 is formed on thelbowl for engaging the outlet pipe. The outlet pipe extends into the bowl to a distance somewhat below ythe top of the bowl and the flange 28. A cap 32, which is hinged to the top of the bowl, is provided for covering the top of the outlet pipe 30 and for forming a water seal` with the outlet pipe in the bowl.

The cap 32 comprises a flat top portion and a flaring fiange 34 extending downwardly from the flat portion 33. A rib 35 is pressed in the top part 33 and the flange 34 shown in Figs. 1 and 2. rThe bottom portion 3G of the rib 35 rests upon the top of the outlet pipe 30 when the cap is lowered in position. sloping end surface 37 is formedon the rib in order to assure proper opening of the cap and prevent the breaking of the hinge con nection between the cap and the bowl when a swabbing tool is forced through the outlet pipe. A plate 38, which is secured to the top of the cap by rivets 39, is provided with three fingers 40, 41 and 43. The end portions 49 and 50 of the `lingers l0 and il on the plate 38 are turned over to form a portion of a hinge. The central linger i3 serves to engage a plate 51 for limiting the raising of the cap 32. The plate 51 is secured to the ice pan l0 and the fiange 28 of the bowl by means of two of the rivets 29, as illustrated in Fig. y2 of the drawings. Plate 5l is provided with a central finger 53 having the end thereof turned over to form a hinge with the fingers et() and Ll1 of the plate 3S on the cap. A suitable cottcr pin 54e projects through the turned-over end portions of the fingers l0 and 41 on the plate 38 and the finger 53 on the plate 5l. lThe central finger i3 on the plate 36 engages the 4 top of the plate 5l when the cap is raised to its extreme position. The extreme raised position of the cap is indicated by dot and dash lines in Fig.y l of the drawing. Fig. 3 of the drawing also shows the hinge in its extreme open position. The center of mass of the cap is substantially located at a pointV indicated by the reference character 55. Such center of inass does not pass over the hinge so that the force of gravity always exerts a force tending to lower the cap when it is in raised position. Wlhen the cap is in its eX- treme raised positioinas indicated by the dot and dash lines in Fig. l of the drawings, the

' point indicating thecenter of mass is shown to the right of the hinge connection between the cap and the bowl kand accordingly a force is exerted tending to lower the cap.

The bottoni surface 36 of the rib 85 supports the cap when it is in lowered position. The inclined surface 37 of the rib serves as a means for engaging a swabbing` tool when the outlet pipe is being cleaned. The inclinedv the turned-over end portions of the lingers 40 and il on the plate 3S. In the hinged structure shown in Fig. 4e the position of the fingers with respect to each other Ais reversed.

A. plate 56 is secured to the cap 32 by rivets and is provided with a central nger 57 having a turned-over end portion. A hinged plate 58 is secured to the flange 2S on the bowl Vby .neans of two of the rivets 29. Such hinge pld-te 58 is provided with two fingers 59 and 60 having turned-over end portions which are disposed on opposite sides of the nger 57 on the hinge plate 56. Projecting fingers 6l and 62 on the plate 56 Vengage the plate 58 to limit the raising of the cap. Referring to l of the drawings it may be not d the cap 32 is hinged to the plate on the bowl at a point below the top surface of the cap and above the top of the bowl. A

in the modification shown in Figs. 5, 6 and 7 of the drawings, corresponding parts will be indicated by like reference characters. rllhe bowl, the outlet pipe and the ribv structure on the cap inthe trap shown in Figs. 5, 6 anc `7 are exactly similar to the same parts shown in Figs. l, 2 and 3 of the drawings. The hinge connection between the cap and the flanges on the bowl has been changed and the posit-ion of the cap khas been lowered. Upon theflange 34 of the cap 32 a bracket 64- is secured to form a portion of a hinge connection. Such bracket 64 is riveted and welded to the flange 34 on the cap as indicated in Fig. 7 of the drawings. A plate 65, which is secured to the ice pan and the bowl by means of rivets 66, has a downwardly extending portion 67 as indicated in Fig. 5 of the drawings. Such downwardly yeX- tending porti-on 67 has a turned-over end part which encircles the bracket 64, as shown in Figs. 5 and 6 ofthe drawings. In the modification under consideration the raising of the cap is limited by the fiange Se thereof engaging the plate 65. The eXtreme raised position of the cap is indicated by dot and dash lines in Fig. 5 of the drawings. The center of mass of such cap is indicated by the reference character 55 used in Fig. l of the drawings t-o indicate the center of mass. t will be noted the center of mass indicated by the reference character 55 is to the right of the pivotal point for the cap,

Aas indicated in Fig. 5 of the dra-wings. At-

tention is also called to the fact that the modification shown in Figs. 5, 6 and 7 is provided with a cap having the top thereof level with the floor of the ice pan, and a hinge located within the bowl 27.

ln the inodication shown in Fig. 8 of the drawings the bracket 64e on the flange 34: of the cap 32 engages a. hinge pla-te 69 which is different from the hinge plate v shown in Figs. 5 and 6 ofthe drawings. The hinge plate 69 which is suitably riveted to the bowl 27 has a downwardly and outwardly extending portion 70 thereon. The portion 70 has a turned-over end'part 71 for engaging the bracket 64 onthe cap. In Fig. 8 of the drawings the cap is shown in its extreme raised position in order to illustrate the manner in which the flange 34 of the cap engages the plate 69.

l/Vhat is claimed is:

l. In a trap, a. bowl adapted to extend over a floor, an` outlet. projecting into the bowl and extending nearly Vto its top, a swingable cap for said outlet having an angular stop rib therein to rest on said outlet, and a hinge` a drain pipe cleaning element, and a oleaningelement deflecting member carried by the cap and extending at an oblique angle with respect to the horizontal so that upon engagement of the latter by the cleaning element such cleaning element will be deflected beyond such cap.

3. A hinged, swingable .sheet metal trap cap having a 'flat top, a dependino flange, and a stop rib pressed into the cap trom the metal 4of its top and flange portions, and having an oblique inner end.

4c. A. hinged, swingable sheet metal trap cap having a iiat top portion, a depending flange, and a stop rib pressed into the cap from the metal of its to and ilange portions, with its inner end s oping upward toward the hinge.

5. In a trap, a bowl with a supporting flange, an outlet projecting into said bowl and terminating below the topI thereof, a swingable sheet metal cap having a depending iiange surrounding the top of the outlet, a hinge connection between the cap and said supporting flange, and a stop rib pressed into the cap from the metal oi' its top and ilange portions to rest on said outlet, the inner end of said rib sloping toward said hinge. 6. In a trap having a bowl and an outlet projected thereinto, a cap comprising a hingedly mounted inverted cup-shaped element positioned over said outlet and having an inwardly extending rib formed therein defining a seat adapted to rest upon the outlet to support said cap and an upwardly extending deliecting portion.

7. In a trap, a bowl having an outlet projecting thereinto, a pivotally mounted cap normally arranged over the outlet and provided with an internal stop rib delining a support for the cap adapted to rest on the outlet and an internal delector for enga-ge ment by a cleaning tool.

In witness whereof we have hereunto set our hands.

LEOPOLD ALMQUIST. VICTOR IVILLOUGHBY. 

